Paper-box machine.



PATENTED MAR. 12, 1907.

A. W. MITCHELL.

PAPER BOX MACHINE.

APPLICATION FILED MAR.7, 1906.

'7 SHEETS-SHEET 1.

llllllxl l IIIIV II INVENTOR WITNESS ES ATTORNEYS No. 847,098. 1 PATENTED MAR. 12, 1907. A. W. MITCHELL.

PAPER BOX MACHINE.

APPLICATION FILED MAR.7, 1906.

7 SEEETSfSHEBT 2.

W ITN ESSES ATTOR N EYS O 9 1 2 1 A M D E T N E T A P T u E H G T I M W A om 9 a 7 A1 00 0 N PAPER BOX MACHINE.

APPLICATION FILED MARJ, 1906.

'7 SHEETSSHEET 3.

S E S S E N W W MMLI JZLM Q WMW4 ATTORNEYS PATENTED MAR. 12, 1907.

A. W. MITCHELL.

PAPER BOX MACHINE.

APPLIGATION FILED MAR.7, 1906.

7 SHEETS-SHEET 4.

WITNESSES [NW M M wmmmmm ATTQRNEYS.

PATENTED MAR. 12, 1907.

A. W. MITCHELL.

PAPER BOX MACHINE.

APPLICATION FILED MARJ, 1906.

'1 SHEETS-SHEET 5.

INVENTOR awwm WITNESSES Ai'TO RNEYS PATENTED MAR. 12-, 1907.

A. W. MITCHELL. PAPER BOX MACHINE.

APPLICATION FILED MAR.7,1906.

7 SHEETS-SHEET 6.

WiTNESSES \NVEN TOR wkwmzzaad M0 4 ATTORNEYS PATENTED MAR. 12, 1907.

A. W. MITCHELL.

PAPER BOX MACHINE.

APPLIGATION FILED MAR.7, 1906.

7 SHEETS-SHEET 7 INVENTOR WlTNESSES WW4; M

ATTORN EYS UNITED STATES PATENT OFFICE.

ALBERT W. MITCHELL, -OF NEW HAVEN, CONNECTICUT, ASSIGN OR, BY MESNE ASSIGNMENTS, TO JOHN N. LEONARD, TRUSTEE, OF NEW HAVEN, ,CONNECTICUT.

Specification of Letters Patent.

Patented 'March 12, 1907.

Application filed March 7, 1906; Serial No. 304,673.

To a whorrb it rrutg concern:

Be it known that I, ALBERT W. MrToHELL, a citizen of the United States of America, re-

siding in the "city of NeW'Haven, in the 5 construct the machine as to increase its capacity and the speed of production of the .boxes and to simplify the construction of the machine as compared with the usual machines for this work in which reciprocating plungers are employed.

One of the main features of my machine whereby these objects are accomplished consists in combining a continuously-rotating wheel carrying formers with another continuously-rotating wheel cooperating with the former-wheel and devices for folding first one end of the box and then the other, as will be hereinafter described.

In the accompanying drawings, Figure 1 is a side elevation illustrating the main features of my machine. Fig. 2 is a vertical section, on a larger scale,"v illustrating the parts at the momentwhen the flaps at the advance end of the box are being folded. Fig. 3 is a similar view showing parts moved to positions when the flaps at the rear end of the box are being folded. Fig. 4 is a pers ecti've view drawn to a still larger scale and i1 ustrating parts of the operation. is a cross-sectional view illustrating one of the folding operations. Fig. 6 1s a sectional plan view on the line 6 6, Fig. 5. Flg. 7 is a is a view illustrating devices forsecuring a closing pressure on one of the folding devices at the forward endof a box.- Fig. 9 is a view of the same immediately after it is released. Fig. 10 is a sectional view at right angles to Fig. 8. Fig. 11 is a view similar to Fig. 8, but illustrating the folder Fig. 8

for the rear end ofthe box. Fig. 12 is a view corresponding with Fig. 11, but illustrating the pressure device after it has passed to the release position. Fig. 13 is a sectional view at right angles to Fig. 11. Fig. 14 is a sectional view on the line 14 14, Fig. 15. Fig. 15 is a sectional elevation'at right angles to the view Fig. 14, and Fig. 16 isa perspective view of one of the blanks ready to be fed to the folding devices.

Referring to Fig. '1, A is the frame of the machine, which may be of any suitable construction; and B is the roll of paper or pasteboard from which the blanks for the boxes are to be out. The web of paper from the roll B passes up through the guide I) to suit able pasting-rollers C of any convenient construction and thence over an idler-roller c to the table D, which is provided with suitable scoring-rollers, such as E and F, these scoring-rollers producing on the paper the longitudinal scores as and the transverse scores y, Fig. 16. The web then passes to the cutters G, Fig. l, which may be of any convenient construction and operation, provided they" are adapted to cut out the gores z and sever the blank from the web in the form shown in Fig. 16. The blank is then fed forward under the stationary forming-guide H, Figs. 1 and 4. The forward end of this guide H projects between the rings or disks 20 of the wheel K, which is mounted on a shaft 16, turning in suitable bearings k in the frame, Fig. 1. Suitable mechanism is provided to impart to this shaft a continuous rotary motion in the direction of the arrow, Figs. 1 to 4, and a corresponding continuous rotary motion is at the same time imparted to the cooperating former-wheel M in the direction of its arrow, Figs. 1 to 4. This formerwheel M is provided with a number of radially-projecting formers mfour in the present instance-to cooperate with a like number of plates 21 in the wheel K, connecting the two disks 20 of that wheel The formers m on'the wheel M are of a width to enter between the two disks 20 of the wheel .K, with just sufficient play to permit the edges of the pa er blank which are to form the sides of the ox to be folded up between the opposite sides of each former m and the inner sides'of the disks 20, Fig. 5. readily seen by reference to F igs. 2 and 3, the

As will be tan ular box, as illustrated, each former m is ma e of the segmental outline shown in Figs. 2.and 3, the forward and rear walls being on planes radiating from the axis of the formerwheel The disks of the wheel K are formed on parts 22, Figs. 2, 3, and 4, into'which the for- 1 ward edges of the successive blanks are fed,

'4, and as the disks '20 move forward in the direction of the arrow, Fig. 4, thesebeveled notches tend to turn 'upthe sides 23 of the blank pre aratory to the action of the Y a proaching ormer m, which then com- Eetes the folding up of the sides 23 of the lank, Figs. 4 and 14, betweenthe former m and the inner faces of the disks 20, Fig. 5.

In connection with the described wheels folding devices are provided to fold in first the forward end flaps and then the rear end flaps of the blank. By preference I mount these folding devices in the wheel K. Firstthere. are the side-flap-folding devices, consisting of-two slides 24, guided transversely in the disks 20 and bent at their inner or acting ends 25.- Devices are provided to act upon these laterally-moving slides to move them inward to the position shown in Fig. 5 to turn the side flaps 26 of the blank inward tothe position illustrated in that figure and in Fig. 4. I provide means whereby the slides 24 are then instantly drawn back again, so that then the hinged folder 27, Fig.

2, may come into play. to t row up onto theinturned flaps 26 t Fig. 2. These flaps have already been gummed at C, Fig. 1, on what will become their adjacent faces, so that when pressed together against the. forward face of the former m they will adhere. Fig. 2 shows the hinged folder 27 thrown up into the. position where it has closed the end flap ward end of the blank onto the inwardlytu-rned side flaps 26. As the wheels M and K move forward, the hinged folder 27 .is thrown down again, Fig. 3, and when the wheels are approaching the position indicated in Fig. 3 the laterally-sliding folders adjacent to'the rear end of-the box-blank and similar to folders 24 are thrown into action toturn inward the-rear side flaps 26. Then these side folders 24 are withdrawn and the hinged rear folder 29 is thrown up, as shown in Fig. 3, to fold the rear flap 28 over the side flaps 26, which have been already turned in at the rear of the box. These (laps have also been previously pasted, so that formed from the blanks in continuous mana shaft 36 in the frame.

e end flap 28 of the blank,

28 at the for.-

ner at a speed greatly exceeding that at which intermittently-moving formers can work.

While various devices may be employed for actuating thefolders, I will now describe mechanisms which are adapted for the pur ose. f

First, with reference tothe side folders 24, they may be acted upon by pivoted -levers 30, Figs. 4'- and 5, WhlCh in. turn are at the l ers inwardly by means of the latera movable slides 31 and 32, Fig." 5, inthestationary side frames A. I One-of these slides 31 has at'its rear end apin 34, Fig. 6, acted on by the long arm of a bell-crank lever 35 on The other" arm of the bell-crank lever is. acted upon by a slide V pro errnoment acted .on to move the sliding their inner edges at mtervals with beveled 0 37, guided in the frame and adapted to be actuated by a rotating cam 38', Figs. 6 and 7 which may be operated from any suitable moving p art of the Inachine-as,"for example,

by a gear 39 on the shaft m of the formerwheel M gearing into a pinion 40 on the shaft which carries. the cam 38, Figs 5, 6, and

7. I Thus each time a cam on the wheel 38 strikes the slide 37 motion is transmitted throu h the bell-crank lever 35 to the slide 31 an thence through the lever 30 to-throw the corres onding folder 24 inwardly to the position s own in Fig. 5.1 .A like and simultaneous motion is imparted to .theopposite slide 32 to act on its folder 24 through the connections illustrated in Fig.-5. For this purpose the bell-crank 35 is mounted on'the vertical spindle 36, Figs.- 5 and .14, which at its lower end has a. crank 41, connected through a rod 42 to. a like crank-=43, Fig. 5, on an upright spindle 44, the upper end of which has an arm 45, corresponding to the long arm of the bell-crank lever35, to act on the slide 32, as will be readily'understood.

To withdraw the sliding folders 24, a suitable spring may be provided at any suitable point-as, for example, 46,-Fig'. 5'-to draw )ack the described partsto their former positions with the folders 24withdrawn as soon L 29, it will be seen that all t ese folders are so acted upon by spiral springs 50, Figs. 2 and 3,

as to tend to throw these folders outward to the radial positions which they occupy in folding up the ends of the blanks; but means are provided for normally holding these folding-blades 27 29 back in the ositions illustrated in Figs. 2- 'and- 3 for al the blades but one. For this pur ose I carry the axis 27 29 of each hinged b ade through the side disks 20 to the outside, and at one end I provide it witha crank-pin 51, Figs. 10, '14, and 15.. This crank-pin 51 is ada ted to run in a circular fixed trackway 52, ed to the frame. When the crank-pins of the several hinged folding-blades are thus guided in the grooved trackway 52, those blades will be held in the backward positions illustrated in Figs. 2 and3 for all except one of the blades, and this against the tension of their springs 50. This trackway 52 is cut away at 60, Fig. 14, sothat when each one of the crankpins 51 comes to the cut 60 it can-spring out of the retaining-trackway 52 under the action of the spring actin on the blade. In" the case of the forward b ades 27that is, those hinged blades which fold up the forward'ends of the boxesthe cranks jump out of the iding-groove toward the center of the circ e, and then as the wheel K turns forward in the direction of the arrow, Fig. 14,

the crankpin will come up against the cam 53, which will guide the crank-pin back again into the grooved trackway.

In the case of the rear folding-blades 29 the cranks when they come to the=cut 60 will jump outward, as indicated in Fig. 143 To bring these crank-pins of the blades 29 back again into the guiding-groove, I may provide a vertical rod 54, Figs. 14 and 15, acted on by a powerful spring 55 and having a rojecting shoulder 56 lying over the point w ere the crank-pin wil come out of the cut 60. The upper end of this rod 54 has a shoulder 57, with or without an antifrictionroller 58, and this shoulder is acted on by a series of cams 59, Figs. 1, 14, and 15, on the outer face of the adjacent disk 20 of the wheel M. These earns 59 at the proper time act on the shoulder 57 and roller 58 of the rod 54, so as to lift thelatter and tension the spring 55, as indicated in Figs. 14 and 15; but when the folding action of the blade 29 is completed the shoulder 57 of the rod 54 will have passed ofi the high point of the corres onding cam 59, and then the spring 55 w'l throw the rod 54 downwardly andcause the shoulder 56 to so act upon the crank-pin 51, which is then out of the cut 60 as to throw that crank-pin downwardly and hold it until it has passed into the conand 10, and in suitable position wit refer ence to this latch I provide a rotary catchpiece 62, rotated, as by means of a gear 65, on the shaft m, meshing into a pinion 66, attached to the catch-piece 62. The parts will be assumed to be rotating in the directions indicated by the several arrows in Fig. 8, with the result that at the moment that the folding-blade 27 has pressed up the forward flap one of the catches of the catch-piece 62 'will engage the spring-latch 63 on the arm instead of from the axis of the wheel M, and

the corresponding catch-piece 68 will be rotated from the shaft of the lower wheel K.

In this specification I use the term disks for the parts 20 of the wheel K in a sufficientl general sense to apply to the sides of the w eel whether in solid or open form.

I claim as m invention- 1. A paperox machine having two cooperating wheels, one carrying radially-projecting formers and the other of which has two disks between which said formers ma pass and devices to act in conjunction witli the formers to fold the flaps of the boxblanks.

2. A paper-box machine, having two cooperating wheels, one carrying radially-projectin formers and means for folding the flaps st at one end of the blank and then those at the other end of the blank against a former.

3. Apaper-box machine, having two co-' operating wheels, one carrying radially-projecting formers of an outline different from the box to be formed, and means for folding .the fla s first at one end of the blank and then t ose at the other end of the blank against a former. I

4. A paper-box machine, having two cooperating wheels, one carrying segmental formers, means for folding against the segmental former the flaps of the box-blank first at one end of the blank and then those at the other end.

5. Apaper-box machine, havin two cooperating wheels, one carrying ra ially-projecting formers and the other of which has I'IO two disks between which said formers may pass and devices to act in conjunction with the formers to fold the flaps of the boxblank, and means for imparting continuous rotary motion to the wheels.

6. A paper-box machine, having two cooperating wheels, one carrying radially-projecting formers and means for folding the flaps first at one end of the, blank and then those at the other end of the blank against a former, and means for imparting continuous rotary motion to the wheels.

7. A paper-box machine, having two cooperating wheels, one carrying radially-projecting formers of an outline different from the box to be formed, and means for folding the flaps first at one end of the blank and then those at the other end of the blank against a one end of the blank and then at the other end.

' and then to fold the end flaps first at one end continuous rotary motion to the whee o crating Wheels, one carrying formers and the formers may 9. A paper-box machine, having two cot e other having two disks between which ass and folders for folding in the ends of the blank first at one end of the blank and then at the other end. g y x 10. A paper-box machine, having two 00- operating wheels, one carrying formers and t e other having two disks between which the formers ma ass and devices on the second wheel for fo ding the side and end'flaps first at i 11. A paper-box machine, having two cooperating wheels, one carrying radiallyroj ecting formers and the,other carrying sli ing folders to fold the side flaps and folders to fold the end fla operating wheels, one of which has formers and the other of which has two' disks, be-. tween which the formers may pass, these disks carrying devices to fold in the side flaps of the blank and then at the other.v 13. Apaper-box machine, having vtwo c0- operating wheels,

operating wheels, one carrying formers and .1 I

the other having two disks with 'n o tched inner edges t'oi receive the blanks to start the side folds of the box, the formers passing between the disks to complete the side folds, and means for folding the fla s first at the forward end of the blank and t en at the rear end of the blank. v

14. A-paper-box machine, having two coone carrying radially-projecting formers and means for folding the flaps first at one end ofithe box-blank and then the flaps at the other end, and devices for imparting an extra pressure to the fold ing means.

- 15. A paper-box machine, having two co- 0 crating wheel's, one carryin formers and t e other carr 'ng hinged fol ing-blades to fold the end fl a ps of the blanks and means for imparting an extra pressure to the blades when the flaps have been folded.

, 16. A paper-box machine, having two co- 0 crating wheels, one carrying formers and t e otherhaving two disks notched at their inner edges and a stationary guide rojecting between the disks and over which t e folding pp, of the blank may be begun as the blank en- 12. A paperoxmachine, having two 00- ters the notches of the disks.

In testimony whereof I have signed my name to thisspecification in the presence of. two subscribing witnesses. i

v ALBERT W. MITCHELL.

Witnesses: a ARTHUR W. CHAMBERS, 3 HARRY G. DAY. I 

